/*
    Carracci Systems - Carracci Server (openbam project)
    Copyright (C) 2007  Carracci Systems

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.openbam.core.expr;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.openbam.core.Event;

/**
 * A window that is only based on the size of window.
 * @author isabharwal
 *
 */
public class SizeWindow implements IOperatingWindow {

	protected ArrayList<EvaluatedValue> window = new ArrayList<EvaluatedValue>();
	protected int windowSize = 100;
	
	public SizeWindow(int windowSize) {
		this.windowSize = windowSize;
	}
	
	public List<EvaluatedValue> getCurrentWindow() {
		return window;
	}

	public void resizeWindow(Event newEvent, IOnResizeHandler resizeHandler) {
		Iterator<EvaluatedValue> it = window.iterator();
		int numToRemove = window.size() - windowSize;
		
		while((numToRemove > 0) && it.hasNext()) {
			EvaluatedValue value = it.next();
			it.remove();
			resizeHandler.removed(value);
		}
	}
}
